iOS does it that way. My iPod touch always forgets date and time when it runs out of battery. After restart you can't do anything in the App Store or on https w

iOS does it that way. My iPod touch always forgets date and time when it runs out of battery. After restart you can't do anything in the App Store or on https websites before you've set the correct date (it defaults to 1970 which is when the iPod was first introduced I believe).